big
blue sky
building
chemical industry
construction
containers
diesel
economic
electricity
energy
factories
flammable
fuel
gasoline
industrial
industry
metal
natural
natural gas
oil
oil and water tank
oil field
oil refinery
oil tanks
pipe
plants
pollution
processing
production
pump
red oil tanks
reserves
reservoir
round
shaft
shops
sky
smoke
stairs
steel
storage
the stairs
valve
warehouses
warming
white liquid
yellow